Construction of ferroconcrete walls and the like.



C. M. BURNETT. CONSTRUCTION OF FERRO CONCRETE WALLS AND THE LIKE.

APPLICATION FILED FEB. 23,19I6- 2 SHEETS-SHEET I.

Patented Aug. 21, 1917 igs msww.

Tw m C. M. BURNETT. CONSTRUCTION OF FERRO CONCRETE WALLS AND THE LIKE.

APPLICATION FILED'FEB. 23, I916.

Patented Aug. 21, 1917.

2 SHEETSSHEET 2.

Fig.1)

, lUl TlfT" STATES PATENT onnron.

CUTTIBERT MILLER BURNETT, or SHIRLEY, ENGLAND.

"CONSTRUCTION or FERROCONCRETE WALLS AND THE LIKE.

Specification of IiettersiPatent. Patented A11 21, 1917.

Application fi led February 23, 1916. Serial No. 80,041.

To all whom it may concern: I

Be it known that I, C TI-IBEnT MILLER BURNETT, civil engineer, a subjectof the King of Great Britain, residing at St. Katharines Clifton Road,Regents Park, Shirley, in the county borough of Southampton, Eng, haveinyented certain new and useful Improvements in the Construction ofFerroconcrete Walls and the like, ofwhich the following is aspecification. This invention relates to the construction andreinforcement of concrete walls of buildings and the like, and has forits object to provide means, namely, specially prepared forms, casings,or shutters, for holding or retaining plastic concrete inposition duringthe process of constructing and until set, and means for holding thesaid forms in position during the operation of filling, and forretaining them in position until the concrete is set. i

To the above end my invention is characterized by the employment of aplurality of shutters or form sections which are made to a suitablestandard size or sizes. These shutters may be constructed of wood oriron or of cementand asbestos sheets of the kind known as Ete1'nit,or"Fibro cement or the like, hacked or reinforced with wood or othersuitablefsubstance; or they may be made of the material known asjointless flooring, or othei material' reinforced internally with wireor thelikeyorcovered With canvas or the like externally. According to myinvention the shutters are fitted at intervals on their top .and bottomedges or otherwise with hooks so constructed that when required, theymay be operated to re lease their hold on the attachment which connectsthe shutter of w'hich they form part to the opposite shutter. The hookspreferably project beyond the inner face of the shutter or otherwise.

The method of carrying out my invention for constructing "concrete wallsis as follows: I first strain, by mechanical or other means, wires orother suitable reinforcements horizontally along the fixedsite of thewall at distances apart equal to the width of the shutter, that is,equal to the vertical distance apart of the releasable hooks, or in someother suitable position. To these wires or reinforcements there are,attached by suitable means at points opposite the re-- leasablehooksmetal or other loops or attachments which are fitted at the shutter endswith eyes or attachments which engage withthe releasable hooks on theshutters. These loops have the effect of holding the shutters at therequired distance away from the reinforcements, and the required Inanother I distance away from each other. form of the invention theloopsoare releasably attached to the back of the shutters, as in Figures7, 8, and 9, hereafter illustrated.

Having thus generally described the object, nature, and effects of theinvention, I will now proceed to describe it with reference to theaccompanying drawings. The examples which I have illustrated show arrangements and constructions of parts according to this invention.figures the same parts are designated by the same letters, and theycorrespond with those used in the following explanation.

The accompanying drawings are given solely by way of examples for thepurpose of showing how the loops may be releasably attached to theshutters, and also how the loops may be attached to the reinforcements;their effectiveness in supporting the shut- In the, various ters intheir required position being mainly ings, Figs. 1, 2, and 3, relate toone method of obtaining the object of this invention.

Figs. 4 and 5 show another method, and Figs. 7, 8, and 9, illustratestill another method.

Fig. 1 is a sectional elevation of a pair of shutters ready for filling,also showing the top edge of a pair of shutters already filled withconcrete. i

Fig. 2 is a plan view of part of a pair of shutters showing thereleasing hooks, reinforcement and connecting loop in position. Fig. 3is an elevation of the back of a part of a shutter, showing crankedspindles for actuating the releasing hooks, and hooks for retaining thespindles in a fixed position.

hinged bar provided with-hooks at the top andbotto-ni. Y I V r Fig. 5 isan elevation of the backof part of a shutter showing the hinged .bar andclips for holding the bar in" position. A A Fig. 6 is a SGClJlO'HELlPlHJL of the: bar and clip.

. r 7 is, a pl-an of part-of a pair of shut ters, showing thereinforcement and loop attached to the shutters *by means -of thumbscrews which take the place of the hooks iis ed'in the other forms ofthe invention.

Fig- 8 is a sectional elevation of Fig; i 7. Fig". 9is an elevationofthe back of a sh'ntter eq nip peel with the th'n'mb-scfrews.

Like characters denote: similar and like parts throughout thespecification and drawings. r

With particular reference to Figs. '1 to 3., a

denotes the shutters or sections of the form co'iiipiising a facingmember a? of sheet material" such as asbestos; ironsheet-lngor "thelike, and "a i'fame or tacking-a which may be 05F; wood or othersuitable material.

Secured to the frame of each section and j-acent its top and bottomedges are the bars or spindles Yfiwhich arer'otatably mounted in thecleats 7). The inner end 'of each b'a'r is "bent an angle to the ren'ia'ining portion so as to provide a suitable handle for rotating the barabout its akis. The outer or thebars "B have secured thereto the hooks7), said hooks projectin'glatera'lly therefrom "and ae'coitnm'odated inrecesses formed in the top and "bottom edges of ea'ch s'ect'ron a, so

thatthey will not protrude beyond thexe'dges thereof but liesubstantially flush therewith. setting the row seeti-on'snp, andafterthe rein-forcing members d have been stretched or laid in the niannerb'efore men'- tioned, use is made of the connecting or spacing loops cEachof these loops 0 'p're'feteably comprises an elongated plate havinga central epening c in which the 'corre spending reinforcing membercZ-engages and haW in-g 'openi-i'i'gs '0 in f'the'opposite ends thereofin w hi'clifengag'e the J bills of the hooks b, asshown in Figs. 1 and),said" bill portions having their curved inner or engag ing. edgesdisposed ec'centr-i'callfy of the axes "of-rdtat ion 05f theb'a rsorspindles 5 so as to exert a wedg ing or biiiding action upon the ends orthe loop when the latteris rotated in one direction means [of its bar orspi i-idler and to immediatelyrelease the loop ends when rotatedintheother direction. It-Wi'llbe clear ft-rom Fig; 1"that i'n erectingthe florm'i-n acc'orda ne'e withtlre invention,

the mater-sin member's (Z are first laid at "a relative dist nce apartequal to the width of each section of the form. The loops are then"disposed on the [reinforcing members and the 'sectionsa are "arrangedin place in the nianner'shown; with their hooks Um'o'ved toengage-in theopenings 0 of the spacing or loop. members 0. After one section of theform has been filled it may be built upon in the manner shown t-he lowerhooks .7) of the added form sections engaging in the openings 0 5 '01? tthe uppermost spacing memloer 0 of the lower adjacent sections. In thisway, the form may be built up as the work progresses and since thespacing members 0 remain"permanently embedded in the concrete the formsections are held rigidly during the course of-th'e Work.

Provision is made for'l'ocking the hooks 7) engagement with the-spacingmembers 0, by me'ans'fof retaining 'h'oo'ks -79 which look over thehandle portions oftlie barsb to 'p reveirt them from rotating. WVhen itis desired to knock do'wn'thesections, it is only necessary to releasethe retaining hook-s b and to rotate the bars Z9so as to move the hooksb from engagemei'it with the spacing iii-embers c.

In Figs. and '5 a modified lfo rm of'the inveiition is showmtlremodification consisting mainly in a Variedconstrrrcti-on of the meansfor retaining the shutters or form sections (l in position. According toFigs. i and 5, each of the SDHClhg members 0 consists oi a wire loopedaround the reinforcing members (Z and'lraving its outer ends p rovidedwith -'eyes in wl'iichengage the hooked enter ends 0 of a pair ofVertical fastening bars 6 hinged together at 5 at their confrontinginner ends, these bars, 'when arranged in position, having their freeends extended thrlough'the cleats b y'secured to the form section.Plvotedretaining members '7)? are also provided 'ior r'etaining" thehinged bars in position and, when it" is desired "to remove said Tb'ars,the'retai'ning members '7) are m ved from engagement therewith so thatthelro'o'ks Z1 may 'be released from the spacing members '0 bythe'brea'king of 'thehinged joints 6t otsa'id bars. The loop members alraves'pnrs 6 thereon which are formed by hearing and depressing; aportion of the Will'be clearly "seen from F 8. Thumb screws Wareextended through the eyes of the members '0 and are removably threadedin the blajt sj secured on the'frame a of the form section a.

In both embodiments shown in t, 5,

the body of said members, so as to lie oppo; I

the loops or spacing members 0, extend.

6, 7, 8, and 9,,theupper and flower edges of each form section aresuitably recessed to provide spaces through which. the ends (if t is tobe understood that in erecting the form, according to the invention,(the reinforcing members (Z have their ends anchored to beams oruprights and are thus held taut or in a semi-rigid condition, ,The formsections shown in the modifications maybe built up in substantially thesame manner as the sections'shown in Figs. 1, 2 and8,

The wires or reinforcements together with the loops hold the shutters orform sections in position while the intervening space between theshutters is filled with plastic concrete, the reinforcements and loopsbeing built in with the concrete and after the concrete has become setform permanent parts of the wall. When the concrete is sufliciently setthe hooks are released and the shutters removed.

My invention. provides a simple and inexpensive wall for houses, storesand other buildings, garden and retaining walls and the like, which bythese means can be constructed of any desired thickness, the length ofthe loops being the determining factor.

The invention is also suitable for the side shuttering of beams and thecasting of lintels, posts, and the like.

Having thus described my invention,what I claim as new therein, anddesire to secure by Letters Patent is 1. Apparatus for constructingreinforced concrete walls and the like, comprising, in combination, apair of spaced form sections adapted to receive the plastic concretetherebetween; means for ho ding a reinforcement under tension in thespace between theform sections; a loop arranged transversely 111 saidspace and secured mtermedia-te its ends to the tensioned reinforcement,to hold said form sections in spaced relation, said loop beingmaintained in a comparatively rigid position by the tension of thereinforcement; and retaining means carried by said form sections andengaging the opposite ends of said loop. a

i 2. Apparatusforconstructing reinforced concrete walls and the like,comprising, in combination, a pair of spaced form sections adapted toreceive the plastic concrete therebetween; a reinforcement wireextending longitudinally of the space between said form sections; meansfor holding said wire under tension; a loop arranged transversely insaid space and secured intermediate its ends to said wire, to hold theform sections in spaced relation, said loop being main tained in acomparatively rigid position by the tension of the wire; and retainingmeans carried by said form sections and releasably engaging the oppositeends of said loop.

3. Apparatus for constructing reinforced adapted to receive the plasticconcrete therebetween; a loop arranged transversely in the space betweenthe form sections; a rotatable member arranged against the outer face ofeach form section; a hook carried by each of said members for releasableengagement with the adjacent endof the loop; and means associated withsaid members forlocking said hooks inengaged position.

Apparatus for constructing reinforced concrete walls and the like,comprising, in combination, a pair of spaced form sections adapted toreceive the plastic concrete therebetween; a loop arranged transverselyin the space between the form sections; a rotatable handle-carrying bararranged against the outer face of each form section; a hook carried byeach bar for releasable engagement with the adjacent end of the loop;and locking means engageable with the bar handles to retain the hooks inengaged position.

5. Apparatus for constructing reinforced concrete walls and the like,comprising, in combination, a pair of spaced form sections adapted toreceive the plastic concrete therebetween; a loop arranged transverselyin the space between the form sections; and a vertical bar arrangedagainst the outer face of each form section for movement with respectthereto, each bar being provided at its upper end with a hook which isalternatively engaged with or released from the adjacent end of the loopconsequent upon the movement of the bar.

6. Apparatus for constructing reinforced concrete walls and the like,comprising, in combination, a pair of spaced form sections adapted toreceive the plastic concrete therebetween; a loop arranged transverselyin the space between the form sections; hooks rotatably carried by saidform sections and provided with bills for releasable engagement with theends of said loop, said bills being arranged eccentrically of the axesgaged position.

7 Apparatus for constructing reinforced concrete walls and the like,comprising, in combination, a pair of spaced form sections adapted toreceive the plastic concrete therebetween; a loop arranged transverselyin the space between the form sections, hooks rotatably carried by saidform sections and provided With bills iionreleasabie engage ment withthe ends of said loop, said bills being arranged e'ccentricaliy of theaxes of rotation of said hooks so as to exert :a Wedging action upon theloop ends when the hooks are rotated in one direction, and toimm'ediahely release said loop ends when rotated in the other direction;a rotatable handle-carrying bar individual to" each hook and Whereon thesame is mounted, SELId bELIS any hand in presence of two subscribingWit- 15 'IIGSS'BSV CUTHBERT MILLER BURNETT.

Witnesses:

FREDERICK J. CnnEsBRoUGH, KATHLEEN MORRIS.

Copies 'of this jp'ate'nt may be obtained for five cents each, byaddressing the flommissioner of Patents Washington, 30.0. I

